Optical therapeutic apparatus and optical therapeutic method

Abstract

An optical therapeutic apparatus includes: a liquid discharge catheter including a first tubular member; a balloon catheter including a shaft, a balloon and a second tubular member; and a light irradiation body. The balloon is positioned such that the balloon is exposed from a distal end of the liquid discharge catheter by bringing the second tubular member into contact with the first tubular member.

What is claimed is: 
     
         1 . An optical therapeutic apparatus comprising:
 a liquid discharge catheter including a lumen for liquid discharge, and a first tubular member with which a proximal end of the lumen for liquid discharge communicates;   a balloon catheter including a second tubular member provided with a shaft which includes one end and another end and is insertable into and removable from the lumen for liquid discharge of the liquid discharge catheter, a balloon mounted on the one end of the shaft, and a port disposed on the other end of the shaft and through which a liquid for inflating the balloon can be injected, the balloon catheter including a lumen for injection which makes the port and the balloon communicate with the shaft; and   a light irradiation body configured to emit light having a preliminarily set wavelength from a diffuse functional unit of a probe distal end in a state where the light irradiation body is inserted into the lumen for injection mounted on the shaft of the balloon catheter, the probe distal end is positioned in the balloon, and the liquid is injected into the balloon, wherein   the balloon is positioned to be exposed from a distal end of the liquid discharge catheter by bringing the second tubular member into contact with the first tubular member.   
     
     
         2 . The optical therapeutic apparatus according to  claim 1 , wherein an effective length of the balloon catheter is greater than an effective length of the liquid discharge catheter. 
     
     
         3 . The optical therapeutic apparatus according to  claim 2 , wherein the liquid discharge catheter includes a through hole through which the lumen for liquid discharge of the liquid discharge catheter and an outside communicate with each other, and the through hole intersects with a longitudinal axis of the liquid discharge catheter. 
     
     
         4 . The optical therapeutic apparatus according to  claim 1 , wherein the port formed in the other end of the shaft includes a port for injection for injecting the liquid and a port for probe for allowing insertion and removal of the light irradiation body. 
     
     
         5 . The optical therapeutic apparatus according to  claim 4 , wherein
 the port for probe is disposed in an extending manner in a proximal end direction along a longitudinal axis of the shaft, and   the port for injection is disposed in an intersecting manner with the longitudinal axis at a preliminarily set angle.   
     
     
         6 . The optical therapeutic apparatus according to  claim 4 , wherein a holding member which includes a function of a sealing cock which prevents the liquid injected into the lumen for injection of the balloon catheter from leaking to an outside is provided to the port for probe and the port for injection respectively. 
     
     
         7 . The optical therapeutic apparatus according to  claim 6 , wherein the holding member provided to the port for probe holds a position of the light irradiation body disposed in the lumen for injection of the balloon catheter. 
     
     
         8 . An optical therapeutic method comprising:
 inserting a light irradiation body into a lumen for injection of a balloon catheter, the balloon catheter including a balloon on one end of a shaft, a port capable of injecting liquid for inflating the balloon on another end, and a lumen for injection communicating the port and the balloon with each other, and disposing a probe distal end of the light irradiation body in a vicinity of an opening for balloon of the lumen for injection;   introducing the shaft of the balloon catheter into a lumen for liquid discharge of the liquid discharge catheter, the lumen for liquid discharge being capable of discharging urine in a bladder;   disposing a distal end of the liquid discharge catheter in the bladder so as to dispose the balloon mounted on one end of the balloon catheter in the bladder;   removing the balloon catheter from the liquid discharge catheter and discharging the urine in the bladder;   inserting the balloon catheter into the lumen for liquid discharge and disposing the balloon in the bladder;   injecting the liquid into the balloon through the port of the balloon catheter and inflating the balloon by the liquid; and   emitting light having a preliminarily set wavelength from a light irradiation unit of the light irradiation body toward the bladder.